Highly ordered hierarchical porous carbon derived from biomass waste mangosteen peel as superior cathode material for high performance supercapacitor

By Viengkham Yang, R. Senthil, Junqing Pan, Abrar A. Khan, Sedahmed Osman, Liren Wang, Wenchao Jiang, Yanzhi Sun. 2019

145 citations recorded by the source corpus.

Abstract In this work, we proposed a porous carbon from waste mangosteen peel as precursor via a facile combined method of carbonization and NaOH treatment processes. The obtained porous carbon has a large surface area of 2623 m2 g−1 and displays a stone-like morphology with highly ordered hierarchical meso-pores structure. The electrochemical response of the porous carbon was appraised in 6 M KOH solution as electrolyte via three-electrode system. It is shown that the porous carbon offers a superior specific capacitance (357 F g−1 at 1 A g−1) and an outstanding rate performance (190 F g−1 at 100 A g−1) which is much higher than the earlier published biomass porous carbon materials. The porous carbon also presents a very low decline rate of 5.5% capacitance after 130,000 cycles at ultra-fast current density of 50 A g−1, which is proved its superb cyclic durability. Furthermore, this porous carbon based symmetric supercapacitor with aqueous electrolyte provides a high capacitance of 114.8 F g−1 at 1 A g−1, an excellent energy density of 51.6 Wh kg−1 at power density of 1200 W kg−1 and superb cycling life with keeps 80% of capacitance for 100,000 cycles at 20 A g−1. Similarly, the symmetric supercapacitor assembled with an organic electrolyte also delivers a better capacitance of 50.8 F g−1 at 1 A g−1, a high energy density of 44.1 Wh kg−1 at power density of 1666 W kg−1 and good cycling life with retains 84% of capacitance over 10,000 cycles at 20 A g−1. Therefore, this work is providing an important strategy for the reusing of the waste mangosteen peels and a new method for the preparation of a low-cost energetic material for high performance supercapacitor.

Subfields: Electrical and Electronic Engineering, Electronic, Optical and Magnetic Materials

View Paper: https://www.semanticscholar.org/paper/6d733473bdda94784ee5fbf8b399c29e9abfb3a4